[PATCH v2 0/8] crypto: caam - add support for LS1043A SoC

From: Horia GeantÄ
Date: Thu May 05 2016 - 11:34:22 EST

As suggested by Arnd, patch 1 fixes io{read,write}{16,32}be accessors
to prevent the case when {read,write}{w,l} are overriden by arch-specific
ones having barriers, while the BE accessors previously mentioned are not
(thus behaving differently, having no barriers).


[Patches 2-4 add io{read,write}64[be] accessors (generic, arm64, ppc64),
such that CAAM's accessors in regs.h are simplified a bit.
Patch 8 adds crypto node for LS1043A platform.
Let me know if it's ok to go with these through the cryptodev-2.6 tree.]

This is a follow-up on the following RFC patch set:
crypto: caam - Revamp I/O accessors

There are platforms such as LS1043A (or LS1012A) where core endianness
does not match CAAM/SEC endianness (LE vs. BE).
Add support in caam driver for these cases.

Current patch set detects device endianness at runtime (as opposed to
compile-time endianness), in order to support multiplatform kernels.
Detection of device endianness is not device-tree based.
Instead, SSTA ("SEC STAtus") register has a property such that
reading it in any endianness and masking it properly, it's possible
to deduce device endianness.

The performance drop due to the runtime detection is < 1.0%.
(An alternative implementation using function pointers has been tried,
but lead to a bigger performance drop.)


Cristian Stoica (1):
crypto: caam - fix offset field in hw sg entries

Horia GeantÄ (7):
asm-generic/io.h: allow barriers in io{read,write}{16,32}be
asm-generic/io.h: add io{read,write}64 accessors
arm64: add io{read,write}64be accessors
powerpc: add io{read,write}64 accessors
crypto: caam - handle core endianness != caam endianness
crypto: caam - add ARCH_LAYERSCAPE to supported architectures
arm64: dts: ls1043a: add crypto node

arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts | 4 +
arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 43 ++++++
arch/arm64/include/asm/io.h | 4 +-
arch/powerpc/kernel/iomap.c | 24 ++++
drivers/crypto/caam/Kconfig | 6 +-
drivers/crypto/caam/caamhash.c | 5 +-
drivers/crypto/caam/ctrl.c | 125 +++++++++++-------
drivers/crypto/caam/desc.h | 9 +-
drivers/crypto/caam/desc_constr.h | 44 ++++---
drivers/crypto/caam/jr.c | 22 ++--
drivers/crypto/caam/pdb.h | 137 +++++++++++++++-----
drivers/crypto/caam/regs.h | 151 +++++++++++++++-------
drivers/crypto/caam/sg_sw_sec4.h | 17 +--
include/asm-generic/io.h | 71 +++++++++-
include/asm-generic/iomap.h | 8 ++
15 files changed, 494 insertions(+), 176 deletions(-)